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              acetylcholine
               基礎(chǔ)科學(xué) 
              
				
              

										 
                      A NEUROTRANS-MITTER found in both vertebrates and inver-tebrates at synapses in various parts of thenervous system and at NEUROMUSCULARJUNCTIONS. It can have either excitatory orinhibitory effects,depending on the location.For example,it is excitatory whe......（本文共 920 字）      [閱讀本文] >> 
               
			  
				 
              
				 
				
				
              
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